foreign keys信息详情
外部键
keys───n.(Keys)(美、英、加、澳、俄)基斯(人名);v.键入;调整……的调子;用钥匙划坏(汽车)(key的第三人称单数);n.钥匙;(钢琴等的)键;密钥;关键;(音乐)调;(无花果树的)翼果;板条间首层灰泥;(篮球的)罚球区;(加勒比海地区的)礁(key的复数)
foreign───adj.外国的;外交的;异质的;不相关的
enharmonic keys───等音调
foreign visitors───外国游客;外国客户
allen keys───n.艾伦内六角扳手
minor keys───小调
y keys───y键
flat keys───平键
florida keys───佛罗里达群岛(美国佛罗里达半岛南端的岛群);n.佛罗里达礁群; [地名] [美国] 佛罗里达群岛
Mapping relationships to database foreign keys.───关系映射到数据库外键。
To accomplish this, you use foreign keys.───为此需要使用外键。
Foreign keys that do not have indexes defined.───外键未定义索引。
In Figure 10 you see three tables, their keys (OIDs), and the foreign keys used to implement the relationships between them.───在图10中有三张表,它们的键(OID)和外键用于在它们之间实现关系。
Again, notice that GORM allows you to think in terms of objects instead of primary or foreign keys.───同样地,我们注意到GORM也允许您从对象而不是主键或外键的角度来思考。
You will not be able to clear the check boxes for tables that are referenced by foreign keys in other included tables.───如果资料表为其他一起包括的资料表中的外部索引键所参考,您将无法清除其核取方块。
ActiveRecord uses primary and foreign keys for a variety of tasks, and both are defined as constraints on your database.───ActiveRecord会为不同的任务变量使用主键和副键,它们都是作为数据库的约束而定义的。
Any cascading actions defined on a related primary key will not be performed on rows that contain foreign keys that are disabled .───将不对包含已禁用外键的行执行对相关主键定义的任何级联操作。
The other problem is bookmarks, which in a data system are actually known as "foreign keys" .───另一个问题是书签,在数据系统中它实际上是“外键”。
In fact, it's limited to MyISAM tables — a table format that doesn't support foreign keys and, thus, may be of limited use.
- foreign key
- foreign language department
- foreign land
- foreign languages
- foreign lending
- foreign legion
- foreign language learning
- foreign market
- foreign language school
- foreign language teacher
- foreign minister conference
- foreign material
- foreign minister spokesperson
- foreign minister of bahrain
- foreign ministers
- foreign minister of china
- foreign nation
- foreign nationality
- foreign nations
- foreign made
- foreign object